Power-driven hair-clipper.



G. P. BEARDSLEY. POWER DBIx/BN HAIR GLIPPEB. A-PPLIUATION FILED HAE. 1v, 1914.

1,123,980. PatentedJan. 5, 1915.

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@Wemag UNITED STATES Speeieetnn of Letters Patent.

.ep-pilonner. filed niezen 17. 191e. Serial No. 825,288.

`Wl1ereby the power received from a ile'rible shaft can be ellectii'ely applied to the blades to operate thesnine.

A further object of the invention is to provide n hair clipper of this character which light in weight and can be easily handled und n'mniprlnted. which isfsimple ond "inexpensive ir. its construction, and which can be easily `resembled or taken apart .its may be desired. .A

With these mid other object-s in View. the .invention consists in certain novel combinations und arr: ngcinents of the parts as will more iully appear as the description proceeds, the novel features thereof being pointed out in the Loppended claims.

For e. full understanding of the invention, reference is -to be had to the following de- "script-ion and accompanying drawing. in

which:v 1

, Figure 1 is e top plan vView of a power driven hair clipper constructed in accordence with the in rention. F1552 is an enlarged longitudinal seeltionaryew through the same. Fig. 3 is transverse 1vertical sectional -view on the line 3-3 of Fig. 2. Fig. 4: is an enlarged plan View of the blades, the reeiproeatineV blade being super-posed upon the fixed blade in operative position. Fig. 5 is en end View of the two blades, and Fig. 6 .is a View similar to Fig. 2, showing a modified construction vof the cam mechanism.

Corresponding and like parts are referred:

lto in the following description and indicated in all the Views of the drawing by the same reference characters. i

Specifically describing the present embodiment of the invention, the numeral 1 designates thefstocliof the tool which is provided with n suitable handle 2, the said handley being shownin the present instance as integral with the stock and projeetine,r lonaitudnelly from one end thereof. One

being provided reciprocating blade so :is to r side of the stoel; l vided with n eh unibe4 said recess.

A fixed hl" of thc rec` which fit in cori side ot the stock, n .blade project outr side of the stock.

Slidebly mounted upon the :fixed blade 5 is n reciprocating blade 7, the teeth la t vof being adapted to cooperate with the 5a of the fixed blfide 5 to cut huir or the li when'the reciprocating blade is moved been .and forth.

A pair of tension screws S l wardly from the fixed blade ceired loosely within slots Q i v ne with to direct'the reciproentin back and forth movements. 'sioniscrews 8 extend upwardly thro stock land ere capped by thnm` springr washers Sb being internos the nuts and the upper en of the bf lt will thus be ob'fiousthet ter tween the blades can be regulated `by' tightening or loosenii I e tiinnl; SR. Ylt will nlsobe obser,Y 'of anti-'friction rollers 10 i tween the 'heel portions o'f til 'as t0 eliminate as much friction .ts These anti-friction rollers maybe r in Aany vsuitable manner, although in the present'instence they are' shown as received. within Correspending guide-- grooves 11 formed in the opposed ncesof the blade.

i 'A- drive shaft 12 extends through the -lindle 2 and stock 1' andprojects into the exi `chamber 4 of the' latter. Arranged within .the chamber 4 and fitted upon the projecting end of the shaft 12 so as to rotate theme. with is/aecNlinder 13. n the presentin. st'nncethis cylinder is shown-11s,he-vingerY feather and spline connection 14 Withjthe shaft 12 so that the parts can be readily .dismounted by Withdrawinnr the shaft 12 longitudinally from the 'chamber 4 and thereby disengaging'it 'from the cylinder 13. An annular cam rib L5 surrounds the cyl-vv index' 13 and is received between a. pai-r of vspaced pins` 16 projeotingupwardly fr om .the reciprocating` blader?, .said pins being preferably provided withl anti-friction roll,- fers 17. With theconstruction 1t fwilljbe obvious that as the cylinder 13 is rotated the cam rib l thereon will coperate with the rollers 17 ci. the pins 16 to impart a back and forth reciprocating movement to the blade 7. j

Thrust bearings are preferably provided nt each end of the cylinder i3. Y. These may be of any vsuit-able construction, although inthe present instance one bearing plate 18 is shown as surrounding the shaft l2 and fitted intocne end of the chamber 4, while a second bearing plate i9 is fitted upon the end of the shaft 12 and engagedy by a spring washer 20.

The` two plates 18 and 19, as well as the ends of the cylinder 13, are provided with annular raceways receiving the anti-friction balls 21 which areA interposed between the said plates and the cylinder.

An adjusting screw 22 which isV threaded in the end of the stool-r l engages the spring 4washer 20 and provides a means for tightening and lloosening the thrust bearings as found necessary'. .it will also be obvious that by suicieiitly loosening this screw the bearing plate '19 can be removed preparatory to dismounting the mechanism.

A; modification is illustrated by F ig. Spin which the cam mechanism is so constructed as to prevent breakage should a pin or other obstruction be encountered by the blades. The two blades themselves are constructed and mounted as inthe previous instance, although the annular cam rib instead of being integral with or rigidly mounted upon the cylinder, is carried b a ring 24 which is mounted upon the cy inder 131'to slide longitudinally thereon, but has a feather and spine connection therewith. Collars 25 are threaded or otherwise removably tted upon opposite ends of the cylinder 13*i and springs 26 are interposed between the said collars and the ring 24C so as to hold the same yieldingly in operative position. These springs 2G are suliciently strong to hold the ring 24 in position and cause the cam rib 15n to operate the reciprocating blade 7 under ordinary conditions, althoughshould a pin or other obstruction be encountered byv the cutting teeth ot the blades so as to clog the same, the springs 26 would permit the ring 24 to slide bacic and forth on the cylinder 13a as the latter revolved with the shaft 12, thereby preventing any shock or injury and enabling the' shaft 12 to rotate without operating the blade 7. in this modified construction it will also be observed that the anti-friction rollers .21` are interposed between the bearing plates 18 and 19 and the respective collars 25, the latter having suitable raceways formed therein.

In both forms oi thcinvention the oute'r endioi the drive shaft 1'2 is designed to be connected to a flexible shaft 2S which may reeeive power from a fixed motor. The tool is light in weight and compact in constrution so that it can be easily guided and manipulated when held by the handle 2 and the rotation of the shaft 12 o crates through the cam mechanism, as has' een previously described to reciprocate the blade 7 of the cutting mechanism. l Having thus described theinvention, what I claim' as new and desire to secure by Letters' Patent, is y 1. A power drivenY hair clipper including astock, a xed blade applied to the stock',

.a reciprocating blade mounted Iupon the shaft, thrust bearings for the cylinder',-

means for adjusting the thrust bearings, and an annular cam rib carried by the cylinder and received between the before mentioned pins for coperation therewith to actuate the reciprocating blade.

3. A power driven hair clipper including a stock, a fixed 'blade applied thereto, a reciprocating blade mounted upon the fixed blade, roller bearings between said reciproeating blade and fixed blade, a pair of pins 'i l projecting from the reciprocating blade, a shaft journaled upon the stock, a cylinder ixed upon the shaft, and an annular cam rib carried by the cylinder and received between the before mentioned pins for coperation therewith to actuate the reciprocating blade.

4. A power driven hair clipper including a stock, a iXed blade applied thereto, a reciprocating blade mounted upon the fixed blade, a shaft journaled upon the stock, and cam means yieldingly mounted upon said shaft and adapted to actuate the reciprocating blade.

5. A power driven hair clipper including a stock, a xed blade applied thereto, a reciprocating blade mounted upon the fixed blade, a pair of pins projecting from the reciprocating blade, a'shaft journaled upon the stock, a cylinder slidable back and forth upon the shaft but rotatable therewith, an annular cam rib carried by the cylinder and received between the before mentioned pins latter, and yielding'means normally holding the cylinder'against sliding movement.

A,of the reciprocating blade to operate the 6. A power driven hair clipper including-*13 colurs and the ring nomm u x my signa- 

